RFR: 8368960: Adjust java UL logging in the build

[Matthias Baesken]

In the build process, unwanted UL error/warning messages can pollute stdout and influence the build process/results.

An example is the polluted blocked.certs file from https://bugs.openjdk.org/browse/JDK-8357691 .

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Commit messages:
 - JDK-8368960

Changes: https://git.openjdk.org/jdk/pull/27588/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27588&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368960
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27588.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27588/head:pull/27588

PR: https://git.openjdk.org/jdk/pull/27588